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From: master AT micro DOT internexus DOT net (Laszlo Vecsey)
Newsgroups: comp.os.msdos.djgpp
Subject: Re: Help with keyboard polling
Date: 21 Dec 1995 20:32:04 GMT
Organization: The Internet Nexus
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp

Eli Zaretskii (eliz AT is DOT elta DOT co DOT il) wrote:

: On Mon, 18 Dec 1995, Isaac Kohn wrote:

: > All of the keyboard i/o routines in DJGPP (getkey(), getxkey(), getchar(),
: > etc.) wait for a keypress when they are called.  How do I query in order to
: > retuen a key if one has been pressed, or 0 if not?  In other words, I'm

: Use kbhit().

I think what the original poster meant by the question was if there was a 
char keys[256]; array that DJGPP keep for all the ASCII characters ... 
keys that are currently being pressed down would have a 1 in the array, 
otherwise they would be 0. As you know a scan code is received when a key
is pressed, and also when it is released.

The kbhit() that I'm familiar with doesn't work in this way... it just 
checks if there is a character in the keyboard buffer.